Flora of North America species comparison

1 or multiple, loosely clustered, usually glabrous, sometimes tomentose proximally and in leaf axils.

1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally.

(and proximal cauline) petiolate;

blades orbiculate, ovate, or obovate, 40–100+ × 20–80+ mm, bases tapering, rounded, or abruptly contracted, margins crenate, dentate, or serrate.

(and proximal cauline) petiolate;

blades lanceolate to narrowly ovate or elliptic, 40–120+ × 20–50+ mm, bases tapering, sometimes oblique, margins subentire, crenate, or serrate-dentate.

gradually reduced (sessile, clasping; pinnatisect or sublyrate).

gradually reduced (± petiolate or sessile, weakly clasping; dentate to pinnately lobed).

bracteate, glabrous or proximally tomentose.

bracteate, sparsely to densely tomentose.

8–13(–21);

corolla laminae 7–10 mm.

10 or 13;

corolla laminae 6–8+ mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

50–60+;

corolla tubes 3.5–4 mm, limbs 3–3.5 mm.

13 or 21, green (tips sometimes reddish), 3–6 mm, glabrous or floccose-tomentose proximally.

13 or 21, light green, 5–8 mm, usually glabrous (sometimes hairy proximally).

conspicuous.

inconspicuous.

6–15+ in open or congested, corymbiform arrays.

10–30+ in open, corymbiform arrays (more in robust individuals).

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

1–1.5 mm, hispid;

pappi 5–7 mm.

= 44, 88, 90.

= 46.